Dizzy/lightheaded after eating

Jeanette
Im 30 weeks, and for the past week or 2 after I eat anything, whether its heavy or something light, I start to feel lightheaded and like a coldness in my arms and hands, and feel like I need to lay down.. I have a doctor appointment on thursday, but Im just wondering if anyone else felt like this?? Im taking my glucose test tomorrow, a little late